Quote:
Originally Posted by Synchrodyne
.....The 30F27 would have offered pentode performance and simplicity, with a lower noise level that was probably not too far above that of a triode.....
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The extra noise generated by a pentode over a triode (as I understand it at least) comes from the noise generated when the electron stream from the cathode splits to the screen and anode. This is also true of the tetrode.
Is the better noise performance of the 30F27 over a pentode true
generally of tetrodes and if so why?